Reducing the Carbon Emissions Intensity of a Fuel

1. A method for reducing a carbon emissions intensity of a fuel, comprising: injecting a carbon dioxide fluid into a first wellbore; producing a hydrocarbon fluid from a second wellbore to a terranean surface; and producing a fuel from the produced hydrocarbon fluid, the fuel comprising a low-carbon fuel and assigned an emissions credit based on a source of the carbon dioxide fluid, the source of the carbon dioxide fluid comprising atmospheric carbon dioxide supplied by a biomass carbon dioxide source comprising carbon fixed from the atmosphere by photosynthesis, the biomass carbon dioxide source comprising at least one of: a biological processing that receives biomass as an input and outputs the carbon dioxide fluid and a liquid fuel or chemical product; a process that comprises gasification and receives biomass as an input and outputs the carbon dioxide fluid and a hydrogen-containing product or intermediary product; a combustion process comprising post-combustion carbon capture that receives biomass as an input and outputs the carbon dioxide fluid and at least one of electricity, heat, or power; or an oxyfuel combustion process that receives biomass as an input and outputs the carbon dioxide fluid and at least one of electricity, heat, or power.

2. The method of claim 1 , wherein the source of the carbon dioxide fluid further comprises atmospheric carbon dioxide supplied by an industrial process that captures carbon dioxide from the atmosphere.

3. The method of claim 2 , wherein the industrial process comprises: directing ambient air through a packing material; flowing a carbon dioxide absorbing fluid over the packing material; capturing the atmospheric carbon dioxide in the carbon dioxide absorbing fluid; separating the captured atmospheric carbon dioxide from the carbon dioxide absorbing fluid.

4. The method of claim 3 , further comprising: receiving the captured atmospheric carbon dioxide; and using the received captured atmospheric carbon dioxide as the injected carbon dioxide fluid into the first wellbore.

5. The method of claim 1 , wherein the source of the carbon dioxide fluid further comprises an industrial process that supplies one or more products and services, the industrial process comprising a basis for at least one of a carbon intensity reductions or an emissions credit for at least one of the produced hydrocarbon fluid or the fuel produced from the produced hydrocarbon fluid.

6. The method of claim 1 , wherein the first and second wellbores are the same wellbore.

7. The method of claim 1 , further comprising: receiving at least a portion of the injected carbon dioxide fluid from the first wellbore at the terranean surface within the hydrocarbon fluid; separating the portion of the injected carbon dioxide fluid from the hydrocarbon fluid; and re-injecting the separated portion of the injected carbon dioxide fluid into the first wellbore.

8. The method of claim 1 , further comprising sequestering at least a portion of the injected carbon dioxide fluid in a subterranean zone.

9. The method of claim 1 , wherein the low-carbon fuel comprises a low-carbon transportation fuel.

10. A method for reducing a carbon emissions intensity of a fuel, comprising: capturing a carbon dioxide fluid from a source of carbon dioxide; and providing the captured carbon dioxide fluid to a process for generating a low-carbon fuel that is assigned an emissions credit based on the source of the carbon dioxide fluid, the source of the carbon dioxide fluid comprising atmospheric carbon dioxide supplied by a biomass carbon dioxide source comprising carbon fixed from the atmosphere by photosynthesis, the biomass carbon dioxide source comprising at least one of: a biological processing that receives biomass as an input and outputs the carbon dioxide fluid and a liquid fuel or chemical product; a process that comprises gasification and receives biomass as an input and outputs the carbon dioxide fluid and a hydrogen-containing product or intermediary product; a combustion process comprising post-combustion carbon capture that receives biomass as an input and outputs the carbon dioxide fluid and at least one of electricity, heat, or power; or an oxyfuel combustion process that receives biomass as an input and outputs the carbon dioxide fluid and at least one of electricity, heat, or power.

11. The method of claim 10 , wherein the source of the carbon dioxide fluid further comprises atmospheric carbon dioxide supplied by an industrial process that captures carbon dioxide from the atmosphere.

12. The method of claim 11 , wherein the industrial process comprises capturing carbon dioxide from ambient air in a fluid.

13. The method of claim 12 , wherein the fluid is a carbon dioxide absorbing liquid, and capturing carbon dioxide from ambient air in a fluid comprises: directing ambient air through a packing material; flowing the carbon dioxide absorbing fluid over the packing material; capturing the atmospheric carbon dioxide in the carbon dioxide absorbing fluid; separating the captured atmospheric carbon dioxide from the carbon dioxide absorbing fluid.

14. The method of claim 10 , wherein the source of the carbon dioxide fluid further comprises an industrial process that supplies one or more products and services, the industrial process comprising a basis for at least one of a carbon intensity reductions or an emissions credit for at least one of the produced hydrocarbon fluid or the fuel produced from the produced hydrocarbon fluid.

15. The method of claim 10 , wherein the low-carbon fuel comprises a low-carbon transportation fuel.